datediff in postgresql

The DateDiff function applies to: MicrosoftOfficeAccess2007 returns the variable type (long type), specifying the time interval between two specified dates. See some example syntax DateDiff (interval, date1, date2 [, firstdayofweek] [, firstweekofyear]). The syntax of the DateDiff function contains the following parameters (Parameter The

DateDiff function in ASP DateDiff function Describe Returns the time interval between two dates. Grammar DateDiff (interval, date1, date2 [, firstdayofweek][, FirstWeekOfYear]]) The syntax for the DATEDIFF function has the following parameters: Parameter description Interval must be selected. A string expression that

Label:DATEDIFF function [date and time] The function returns the interval between two dates. Grammar DATEDIFF (Date-part, date-expression-1, date-expression-2) Date-part:year | Quarter | Month | Week | Day | Hour | Minute | Second | Millisecond The parameter date-part specifies the date portion of the interval to be measured. For more information about the date section, see the Date section. Date-expression-1 the start date of a certain interval. Subt

The SQL date minus DATEDIFF () returns the number of days between two dates. The definition and usage of the DATEDIFF () function returns the number of days between two dates. The syntax DATEDIFF (date1, date2) date1 and date2 are valid date and time expressions. Note: Only the date part of the value is involved in calculation.

Tags: des style blog http color ar data Art divLearn from:http://bjtdeyx.iteye.com/blog/1447300The most common statements for SQL date queries -- query data on the first anniversary of the date of the day select * from shoporder where datediff (Week,ordtime,getdate () - 1 ) = 0 -- query all data for the day Select * from where DateDiff (Day, Ordtime,getdate()-1) = 0 --info is the table name, Dat

time-out value of the Fetch field Select DATEPART (mi,createtime) from Life_unite_product--Take the minute value of the Time field Select DATEPART (ss,createtime) from Life_unite_product--takes the seconds value of the Time field Select DATEPART (ms,createtime) from Life_unite_product--take the millisecond value of the Time field Select DATEADD (yy,-1,createtime) from life_unite_product----fetch Time field (year is reduced by 1) Select DATEADD (mm,3,createtime) from life_unite_product----fetch

Address: http://sunboyyyl.blog.163.com/blog/static/224738120112874910613/ Datediff function [Date and Time] Function: returns the interval between two dates. SyntaxDatediff (date-part, date-expression-1, date-expression-2) Date-part: Year | quarter | month | week | Day | hour | minute | second | millisecond Parameters:Date-part specifies the date part of the interval to be measured. For more information about date, see date. Date-express

Detailed description of the datediff function in ASP Datediff Function DescriptionReturns the interval between two dates.SyntaxDatediff (interval, date1, date2 [, firstdayofweek] [, firstweekofyear])The syntax of the datediff function includes the following parameters: Parameter descriptionInterval is required. String expression used to calculate the time i

DateDiff function Returns the time interval between two dates. DateDiff(interval, date1, date2 [,firstdayofweek[, firstweekofyear]]) The syntax for the DateDiff function has the following parameters: Parameters Interval Required option. String expression represents the time interval between date1 and date2 calculations. For numeric values, see the "Settings" sect

Computer room charges to do on the machine and the next part, the need to calculate from the machine to the time difference between the machine, so as to calculate the costs incurred during the machine. At this time, you can use a function can be simple to implement--datediff (), the specific use of rules: DateDiff (Timeinterval,date1,date2 [, FirstDayOfWeek [, FirstWeekOfYear]]) The return value of the

Asp: DateDiff function, aspdatediff Function DateDiff Function Returns the value of Variant (Long), indicating the number of time intervals between two specified days. Syntax DateDiff (interval, date1, date2 [, firstdayofweek [, firstweekofyear]) The DateDiff function syntax contains the following naming parameters: Pa

Datediff usage in SQL Server Datediff function [Date and Time] FunctionReturns the interval between two dates. SyntaxDatediff (date-part, date-expression-1, date-expression-2) Date-part:Year | quarter | month | week | Day | hour | minute |Second | millisecond ParametersDate-part specifies the date part of the interval to be measured. For more information about date, see date. Date-expression-1 The start da

)-- 15,200 9 Select convert (varchar (12), getdate (), 109)-- 03 15 2009 Select convert (varchar (12), getdate (), 110)-- 03-15-2009 Select convert (varchar (11), getdate (), 113)-- 15 03 2009 Select convert (varchar (12), getdate (), 114)-- 15: 15: 55: 717 3. datediff Datediff (datepart, startdate, enddate) Parameter: datepart list Date Abbreviations

Datediff Function DescriptionReturns the interval between two dates.SyntaxDatediff (interval, date1, date2 [, firstdayofweek] [, firstweekofyear])The syntax of the datediff function includes the following parameters: Parameter descriptionInterval is required. String expression used to calculate the time interval between date1 and date2. For values, see the "Settings" section.Date1 and date2 are required. Da

Datediff Function DescriptionReturns the interval between two dates.SyntaxDatediff (interval, date1, date2 [, firstdayofweek] [, firstweekofyear])The syntax of the datediff function includes the following parameters: Parameter descriptionInterval is required. String expression used to calculate the time interval between date1 and date2. For values, see the "Settings" section.Date1 and date2 are requir

Tags: Using data code Time database SQLThese two days to change a SQL Server database program to Oracle, found that two of the functions between the database are many different. The DateDiff function usage in SQL Server's database is explained as follows:DescribeReturns a time interval between two dates.GrammarDateDiff (interval, date1, date2 [, firstdayofweek][, FirstWeekOfYear]])The syntax for the DATEDIFF